Micro-packed bed hydrogenation reactor

Abstract

The utility model discloses a micro-packed bed hydrogenation reactor which comprises a reaction assembly, a gas filling assembly, a sealing assembly and an exhaust assembly, and the gas filling assembly comprises a shell and a pressure gauge arranged on the shell. The gas filling assembly comprises a hydrogen inlet pipe arranged on the left side of the shell, a flow meter arranged on the hydrogen inlet pipe and a nitrogen inlet pipe arranged on the rear side of the hydrogen inlet pipe, and the sealing assembly comprises a top cover in bolted connection with the top of the shell and a hydrogen detector arranged on the top cover; the exhaust assembly comprises an exhaust pipe arranged on the left side of the top cover and a nitrogen recovery pipe arranged on the rear side of the exhaust pipe. Nitrogen can be filled into the shell through the nitrogen inlet pipe, hydrogen can be extruded out through the exhaust pipe after being filled, the hydrogen detector can detect the concentration of the hydrogen in the shell so that the hydrogen can be completely exhausted, meanwhile, the pressure gauge and the flow meter can detect the flow and the pressure of inert gas, and the safety of the device is improved. Therefore, the flow and the pressure of the inert gas are controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogenation reactors, in particular to a micro-filled bed hydrogenation reactor. Background Art

[0002] Hydrogenation reactors are crucial equipment in organic chemistry laboratories and actual production processes, and are mainly used for hydrogenation reactions. This equipment can not only be used as a container for hydrogenation reactions, but is also suitable for occasions where liquids and gases need to be fully mixed. Hydrogenation reactors play an important role in the petroleum industry, especially in the process of converting heavy oil into light oil, such as the conversion of residual oil into gasoline and diesel by hydrogenation. Micro-packed bed hydrogenation reactors are a type of microreactor specifically used for gas-liquid-solid reactions.

[0003] After searching, the patent with announcement number CN108014722B discloses a hydrogenation reactor, and its content records "comprising a barrel, an upper end cap, a lower end cap, an inner barrel, a hydrogen distribution plate and an outlet collector, the inner barrel is an equal-diameter cylindrical barrel, coaxial with the barrel of the reactor, the ratio of the inner diameter of the inner barrel to the inner diameter of the barrel is 0.90-0.97:1, a hydrogen inlet is arranged at the middle position of the top of the upper end cap, a hydrogen distribution plate is arranged below the hydrogen inlet, a generated oil outlet is arranged at the middle position of the bottom of the lower end cap, and a hydrogen distribution plate is arranged below the hydrogen inlet. An outlet collector is arranged above the outlet position of the generated oil. The hydrogenation reactor of the present invention has good operational flexibility, can better contact hydrogen with feedstock oil, increase the flow cross-sectional area of ​​feedstock oil, and reduce pressure..." As can be seen from the above, it is not easy to completely discharge hydrogen after use of the hydrogenation reactor of this patent. The residual hydrogen may cause fire or explosion accidents in the presence of an ignition source or high temperature conditions. At the same time, the residual hydrogen may react with oxygen in the air to generate water vapor, thereby affecting the catalyst performance of the next reaction. There are certain shortcomings. Utility Model Content

[0004] The utility model aims to solve the problems existing in the prior art or related technologies.

[0005] To this end, the technical solution adopted by the utility model is: a micro-packed bed hydrogenation reactor, including a reaction component, a gas filling component, a sealing component and an exhaust component, the gas filling component includes a shell and a pressure gauge arranged on the shell, the gas filling component includes a hydrogen inlet pipe arranged on the left side of the shell, a first valve arranged on the hydrogen inlet pipe, a flow meter arranged on the hydrogen inlet pipe, a nitrogen inlet pipe arranged on the rear side of the hydrogen inlet pipe and a second valve arranged on the nitrogen inlet pipe, the sealing component includes a top cover bolted to the top of the shell and a hydrogen detector arranged on the top cover, the exhaust component includes an exhaust pipe arranged on the left side of the top cover, a third valve arranged on the exhaust pipe, a nitrogen recovery pipe arranged on the rear side of the exhaust pipe and a fourth valve arranged on the nitrogen recovery pipe.

[0006] Preferably, a discharge pipe is provided at the bottom of the shell, and a catalyst bed body is provided inside the shell.

[0007] Preferably, a fixing plate is provided on the outside of the shell, and an audible and visual alarm is provided on the top of the fixing plate.

[0008] Preferably, the first valve, the second valve, the third valve and the fourth valve are all solenoid valves.

[0009] Preferably, it also includes a support assembly, which includes a fixing seat arranged on the outside of the shell, a support rod inserted on the fixing seat, a base plate arranged at the bottom of the support rod, and a first tightening knob and a second tightening knob threadedly connected to the support rod.

[0010] Preferably, the four support assemblies are all arranged on the outer side of the shell.

[0011] By adopting the above technical scheme, the beneficial effects achieved by the utility model are as follows: the second valve of the gas filling assembly provided in the utility model can be opened, and after opening, nitrogen can be filled into the shell through the nitrogen inlet pipe, and after filling, hydrogen can be squeezed out through the exhaust pipe. During the discharge process, the provided hydrogen detector can detect the concentration of hydrogen in the shell until the hydrogen is completely discharged, thereby avoiding the occurrence of fire or explosion accidents. At the same time, the provided pressure gauge and flow meter can detect the flow and pressure of the inert gas, so as to control the flow and pressure of the inert gas, and avoid causing excessive impact on the reactor. After that, the fourth valve can be opened, and the gas can be discharged and recovered through the nitrogen recovery pipe for use. Finally, the first fastening knob and the second fastening knob of the support assembly provided can be loosened, and the shell can be moved up and down after loosening, so as to adjust the height of the shell for installation and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of the housing of the utility model;

[0014] Figure 3 It is a structural schematic diagram of the support assembly of the utility model.

[0015] Reference numerals:

[0016] 100, reaction assembly; 101, shell; 102, discharge pipe; 103, pressure gauge; 104, fixing plate; 105, sound and light alarm; 106, catalyst bed body;

[0017] 200, gas filling assembly; 201, hydrogen inlet pipe; 202, first valve; 203, flow meter; 204, nitrogen inlet pipe; 205, second valve;

[0018] 300, sealing assembly; 301, top cover; 302, hydrogen detector;

[0019] 400, exhaust assembly; 401, exhaust pipe; 402, third valve; 403, nitrogen recovery pipe; 404, fourth valve;

[0020] 500, support assembly; 501, fixing seat; 502, support rod; 503, bottom plate; 504, first tightening knob; 505, second tightening knob. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0022] Some embodiments of the present invention are described below in conjunction with the accompanying drawings to provide a micro-packed bed hydrogenation reactor.

[0023] Embodiment 1:

[0024] Reference Figure 1 and Figure 2 , which is the first embodiment of the utility model, provides a micro-packed bed hydrogenation reactor, including a reaction component 100, a gasification component 200, a sealing component 300 and an exhaust component 400.

[0025] Specifically, the reaction component 100 includes a shell 101 and a pressure gauge 103 arranged on the shell 101. The pressure gauge 103 can detect the air pressure in the shell 101 to prevent excessive air pressure from causing excessive impact on the reactor. A discharge pipe 102 is arranged at the bottom of the shell 101. A catalyst bed body 106 is arranged inside the shell 101. The catalyst bed body 106 contains a catalyst for reaction.

[0026] Furthermore, a fixing plate 104 is provided on the outside of the shell 101, and an audible and visual alarm 105 is provided on the top of the fixing plate 104. The air pressure detected by the pressure gauge 103 can be converted into a signal and transmitted to an external control device. When the air pressure is too high, the external control device can control the audible and visual alarm 105 to make a sound for reminder.

[0027] Specifically, the gas filling assembly 200 includes a hydrogen inlet pipe 201 arranged on the left side of the shell 101, a first valve 202 arranged on the hydrogen inlet pipe 201, a flow meter 203 arranged on the hydrogen inlet pipe 201, a nitrogen inlet pipe 204 arranged on the rear side of the hydrogen inlet pipe 201, and a second valve 205 arranged on the nitrogen inlet pipe 204. When the first valve 202 is opened and the second valve 205 is closed, hydrogen can be transported to the shell 101 through the hydrogen inlet pipe 201 for reaction. When the first valve 202 is closed and the second valve 205 is opened, nitrogen can be transported to the shell 101 through the nitrogen inlet pipe 204 to squeeze out the hydrogen.

[0028] Specifically, the sealing assembly 300 includes a top cover 301 connected to the top of the shell 101 by bolts and a hydrogen detector 302 disposed on the top cover 301. The hydrogen detector 302 can detect the hydrogen concentration in the shell 101 for use.

[0029] Specifically, the exhaust assembly 400 includes an exhaust pipe 401 arranged on the left side of the top cover 301, a third valve 402 arranged on the exhaust pipe 401, a nitrogen recovery pipe 403 arranged on the rear side of the exhaust pipe 401, and a fourth valve 404 arranged on the nitrogen recovery pipe 403. The third valve 402 can be opened to discharge hydrogen through the exhaust pipe 401, and the fourth valve 404 can be opened to recover the exhausted nitrogen through the nitrogen recovery pipe 403.

[0030] It should be noted that the first valve 202 , the second valve 205 , the third valve 402 and the fourth valve 404 are all solenoid valves.

[0031] Embodiment 2:

[0032] Reference Figure 1 and Figure 3, which is the second embodiment of the utility model, which is different from the first embodiment in that it also includes a support assembly 500, the support assembly 500 includes a fixing seat 501 arranged on the outer side of the shell 101, a support rod 502 inserted on the fixing seat 501, a base plate 503 arranged at the bottom of the support rod 502, and a first fastening knob 504 and a second fastening knob 505 threadedly connected to the support rod 502. The four support assemblies 500 are all arranged on the outer side of the shell 101, the first fastening knob 504 and the second fastening knob 505 can be loosened, and the shell 101 can be moved up and down after being loosened. After moving to a suitable height, the first fastening knob 504 and the second fastening knob 505 can be tightened to adjust the height of the shell 101 for installation and disassembly.

[0033] The working principle and use process of the utility model are as follows: when removing hydrogen, first close the first valve 202, and control the opening of the second valve 205. After the second valve 205 is opened, nitrogen can be filled into the shell 101 through the nitrogen inlet pipe 204. After filling, the hydrogen can be squeezed out through the exhaust pipe 401. During the discharge process, the hydrogen detector 302 can detect the concentration of hydrogen in the shell 101 until the hydrogen is completely discharged to avoid the occurrence of fire or explosion accidents. Then, the flow rate and pressure of the inert gas can be detected by the pressure gauge 103 and the flow meter 203 to control the flow rate and pressure of the inert gas to avoid excessive impact on the reactor. When discharging nitrogen, the fourth valve 404 can be opened and discharged and recovered through the nitrogen recovery pipe 403 for use. Finally, the first fastening knob 504 and the second fastening knob 505 of the support assembly 500 can be loosened. After the first fastening knob 504 and the second fastening knob 505 are loosened, the shell 101 can be moved up and down, and the height of the shell 101 can be adjusted for installation and disassembly.

[0034] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A micro-packed bed hydrogenation reactor, characterized in that: include: A reaction assembly (100) comprises a housing (101) and a pressure gauge (103) arranged on the housing (101); A gas filling assembly (200), comprising a hydrogen inlet pipe (201) arranged on the left side of the housing (101), a first valve (202) arranged on the hydrogen inlet pipe (201), a flow meter (203) arranged on the hydrogen inlet pipe (201), a nitrogen inlet pipe (204) arranged on the rear side of the hydrogen inlet pipe (201), and a second valve (205) arranged on the nitrogen inlet pipe (204); A sealing assembly (300) comprising a top cover (301) bolted to the top of the housing (101) and a hydrogen detector (302) disposed on the top cover (301); An exhaust assembly (400) comprises an exhaust pipe (401) arranged on the left side of the top cover (301), a third valve (402) arranged on the exhaust pipe (401), a nitrogen recovery pipe (403) arranged on the rear side of the exhaust pipe (401), and a fourth valve (404) arranged on the nitrogen recovery pipe (403).

2. A micro-packed bed hydrogenation reactor according to claim 1, characterized in that: A discharge pipe (102) is arranged at the bottom of the shell (101), and a catalyst bed body (106) is arranged inside the shell (101).

3. A micro-packed bed hydrogenation reactor according to claim 1, characterized in that: A fixing plate (104) is arranged outside the housing (101), and an audible and visual alarm (105) is arranged on the top of the fixing plate (104).

4. A micro-packed bed hydrogenation reactor according to claim 1, characterized in that: The first valve (202), the second valve (205), the third valve (402) and the fourth valve (404) are all solenoid valves.

5. The micro-packed bed hydrogenation reactor according to claim 1, characterized in that: The invention also includes a support assembly (500), wherein the support assembly (500) includes a fixing seat (501) arranged on the outer side of the shell (101), a support rod (502) inserted into the fixing seat (501), a base plate (503) arranged at the bottom of the support rod (502), and a first tightening knob (504) and a second tightening knob (505) threadedly connected to the support rod (502).

6. A micro-packed bed hydrogenation reactor according to claim 5, characterized in that: The four support assemblies (500) are all arranged on the outer side of the shell (101).

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